Humans love optimism. It’s a no-brainer – optimism makes us feel good and wanting more. This attraction has deep neurological roots that affect both our brain functions and how we process new information.

But for scientists trying to communicate dark and difficult messages about conservation, extinction risks or climate change, pessimism can also be a useful tool (and a logical outcome). Shock headlines grab attention – and may more accurately reflect reality. But too much leads to fatigue and disengagement.

Published today in BioScience, our research outlines steps to usefully combine optimism with pessimism when talking about environmental conservation. We took a deep dive into the literature from psychology, business, politics and communications disciplines, to understand how positive and negative thinking influence human performance.

Know your target audience

To make your environmental message stick, first you need to know who your target audience is. What are their daily fears and future worries? Do they care about nature for nature’s sake, or only when it impacts themselves? How do they perceive scientists? Knowing their fundamental values helps tailor your message.

Let’s say we want to restore an endangered forest, whose existence has been largely forgotten. The benefits of restoring a forgotten habitat are many: the mental health benefits of walking among wise, old trees, the busy routine of forest creatures that churn the soil, increasing forest productivity and cleaning the rivers that flow beyond, and the abundant fruit that falls from the canopy. Not to mention the beauty and wonder of nature, which inspires and enlightens.

Clearly, the benefits of conserving the forest can be framed in many ways for many audiences, whether their primary concerns are environmental, social, economic or personal. Knowing the values and fears of your target audience helps identify what information will resonate.

Build awareness of the threat

Shock grabs attention, so clearly explaining a dire environmental issue is a good strategy for generating initial awareness. An impeding or recent loss (for example, the River Franklin in Tasmania, or fish within the Murray Darling Basin) has a greater attention-grabbing property than positive news, particularly when framed to address the audience’s key concerns. This is where pessimism is necessary – and in fact may simply be realism.

In our endangered forest, the valuable wood has been logged to near extinction. Without the tree’s shade the soil has turned toxic and hard under the baking sun, rendering the land unsafe for human use. The inaccessibility of the last remnant patches means few people can experience their wonders and they will soon be lost from common memory.

This is where the first step, understanding your audiences’ values, helps. For keen hikers the accessibility of forests may be most important. For those focused on the cost of living, you might highlight that without the forest filtering and cleaning drinking water they will need to pay for water treatment plants.

If the trees become extinct so will a sustainable logging industry, which reduces employment. (It also speaks to intergenerational equity, where earlier generations benefited at the expense of later generations.)

Build optimism with success stories

While negative news grabs attention, in the absence of hope it can quickly lead to despair and disengagement. By introducing optimism in the face of environmental crises, people can remain both aware and hopeful for a positive outcome.

Optimism can be built on back of environmental success stories. In our example, the endangered trees produce more seeds than needed to replace old trees. Using these seeds, a local community has reforested toxic land where an old forest once stood, producing early signs of a healthy restored ecosystem. Such a success story provides optimism for other communities to envisage success in their own backyard.

Provide a path forward

Neither hope nor fear alone will change people’s behaviour. To allow change, people must believe their actions can make a difference. Therefore, our next step is to infuse optimism with efficacy, by offering the audience a pathway to engage with the issue.

The initial success of the restored forest breathed optimism into other revival efforts. But without public pressure, local governments can see investment in restoration as unnecessary (especially when the town’s water treatment facilities need updating anyway).

However when councils are convinced and communities engaged we can sow the seeds of recovery and create the community stewardship needed for long-term care.

Encouraging the target audience to form community groups can see a trickle of public pressure increase to a flood. Local administrators may overlook the demands of one or two forest-loving individuals, but it’s hard to ignore a group of voters seeking action.

The power of positive thinking has long been recognised. But environmental optimism is no panacea. It needs to be balanced with the reality of environmental pessimism. Both have their motivating virtues and finding a balance between them attracts attention and inspires action over the long-term.

Our forest example was derived from our experience with restoring Australia’s lost oyster reefs. South Australia’s 20 hectare oyster reef restoration was enabled by the local enthusiasm of a rural community, which was empowered by the expertise of an NGO and solution-seekers within several government departments; all underpinned by the credibility of university research.

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